Vial



FIG. 1 is a perspective view of the front of the vial showing my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a side elevation view thereof;

FIG. 4 is a bottom plan view thereof; and,

FIG. 5 is a top plan view thereof.

The features shown in broken lines depict environmental structure only and form no part of the claimed design. 

CLAIM The ornamental design for a vial, as shown and described. 